package com.apes.framework.plugin.fsm.util;

import com.apes.framework.plugin.express.ExpressEngine;

public class FsmExpressEngine extends ExpressEngine {
    private volatile static FsmExpressEngine instance = null;

    private FsmExpressEngine() {
        super();
    }

    public static FsmExpressEngine getInstance() {
        if (instance == null) {
            synchronized (FsmExpressEngine.class) {
                if (instance == null) {
                    instance = new FsmExpressEngine();
                }
            }
        }
        return instance;
    }
}
